From patchwork Mon Dec 6 21:44:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: andrey.konovalov@linux.dev X-Patchwork-Id: 12659803 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88B16C433EF for ; Mon, 6 Dec 2021 22:00:24 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B98446B00A9; Mon, 6 Dec 2021 16:47:22 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B1FE56B00AA; Mon, 6 Dec 2021 16:47:22 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 99A306B00AB; Mon, 6 Dec 2021 16:47:22 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0120.hostedemail.com [216.40.44.120]) by kanga.kvack.org (Postfix) with ESMTP id 803936B00A9 for ; Mon, 6 Dec 2021 16:47:22 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 48520180C3C42 for ; Mon, 6 Dec 2021 21:47:12 +0000 (UTC) X-FDA: 78888705504.02.8A03D30 Received: from out2.migadu.com (out2.migadu.com [188.165.223.204]) by imf17.hostedemail.com (Postfix) with ESMTP id A716CF0001CF for ; Mon, 6 Dec 2021 21:47:11 +0000 (UTC) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1638827230; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vhe5kEMNFRSnWjEMXar5wkGHtuo9NDKTQhUT0l8T7fU=; b=jRv2K2Ltk3F5wz4BzV2fccJSdYyc31RJmDOteBv/6VztOq/T+Cdioxa94cDFBW6Ax15zwl dVVKoIobsAYHqwIlB1Dmjg/h38gXHcZ0QytRMSJhPsqglzRtdH8RcYcuutAAQvS41BUqyy ndBkslAgLs45ddwWu5tiYcbgf/8lzzY= From: andrey.konovalov@linux.dev To: Marco Elver , Alexander Potapenko , Vincenzo Frascino , Catalin Marinas , Peter Collingbourne Cc: Andrey Konovalov , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, Andrew Morton , linux-mm@kvack.org, Will Deacon , Mark Rutland , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: [PATCH v2 32/34] arm64: select KASAN_VMALLOC for SW/HW_TAGS modes Date: Mon, 6 Dec 2021 22:44:09 +0100 Message-Id: <4f56dd2bfaf945032a226f90141bb4f8e73959b7.1638825394.git.andreyknvl@google.com> In-Reply-To: References: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev X-Rspamd-Queue-Id: A716CF0001CF Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=jRv2K2Lt; spf=pass (imf17.hostedemail.com: domain of andrey.konovalov@linux.dev designates 188.165.223.204 as permitted sender) smtp.mailfrom=andrey.konovalov@linux.dev; dmarc=pass (policy=none) header.from=linux.dev X-Rspamd-Server: rspam04 X-Stat-Signature: m8zdnkrdjiiqw1n3m7cz1p87yj3uyst6 X-HE-Tag: 1638827231-268366 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Andrey Konovalov Generic KASAN already selects KASAN_VMALLOC to allow VMAP_STACK to be selected unconditionally, see commit acc3042d62cb9 ("arm64: Kconfig: select KASAN_VMALLOC if KANSAN_GENERIC is enabled"). The same change is needed for SW_TAGS KASAN. HW_TAGS KASAN does not require enabling KASAN_VMALLOC for VMAP_STACK, they already work together as is. Still, selecting KASAN_VMALLOC still makes sense to make vmalloc() always protected. In case any bugs in KASAN's vmalloc() support are discovered, the command line kasan.vmalloc flag can be used to disable vmalloc() checking. This patch selects KASAN_VMALLOC for all KASAN modes for arm64. Signed-off-by: Andrey Konovalov Acked-by: Catalin Marinas --- Changes v1->v2: - Split out this patch. --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c4207cf9bb17..f0aa434e3b7a 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -205,7 +205,7 @@ config ARM64 select IOMMU_DMA if IOMMU_SUPPORT select IRQ_DOMAIN select IRQ_FORCED_THREADING - select KASAN_VMALLOC if KASAN_GENERIC + select KASAN_VMALLOC if KASAN select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH